Window blind actuator



FIG. 1 is a front perspective view of a window blind actuator embodying the new design;

FIG. 2 is a front elevational thereof;

FIG. 3 is an elevational view of the right side of FIGS. 1 and 2, shown rotated to a horizontal position;

FIG. 4 is a left side elevational view thereof; and,

FIG. 5 is an end elevational view thereof, the end opposite being a mirror image of the end shown.

The rear view forms no part of the claimed design. 

The ornamental design for a window blind actuator, as shown and described. 